> Well copyright is kind of a sticky question here. It is impossible for > any client to present an image to the user without copying the image.> Once the client has the copy, it is impossible to prevent the client> from saving and/or reproducing the image. So, to make the collection> available for viewing you must allow copying.

If the idea is that people must PAY to obtain copyright permission, but
that you want them to be able to look to decide what they are willing to
buy, solutions can be had by allowing browsers to view (and of necessity
copy) low resolution versions of the more valuable high-resolution files
for sale.

If, on the other hand, the idea is that you want to be able to let people
have a look at the high quality images, but you do not want them copied,
then as noted below there aren't many options except counting on the
honesty of the users. Letting folks have at your copyrighted visual via
Mosaic (or similar systems) is equivalent to turning people loose in a
library full of copyrighted material with free photo copiers, VCRs,
cassett recorders, available at every turn.

> So, what do you do? Simply, you must rely on the honesty of the viewer.> You must make it crystal clear on all the image pages that the images are> copyright protected. The simplest method would be to have an anchor > at the top of each page that links back to a full copyright page.

To maintain your copyright, it is important that you take every possible
step to inform users that the material they are viewing is copyright.